Math Olympiad | √x+√y=10 & √xy=10 ; Find x & y=?? 🤔
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- เผยแพร่เมื่อ 30 พ.ค. 2024
- Germany | A Nice Math Olympiad Problem | X=? & Y=?
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Maths Olympaid are held all around the world to recognise students who excel in maths.
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perfect💯
Perfect theorem mam
X and Y values are considered
Method 2:
This is a problem with 2 unknown variables in 2 equations.
dividing √(xy) = 10 by √x leads to √y = 10/√x
replacing √y in the first equation leads to √x + 10/√x = 10
√x + 10/√x = 10 can be solved in following way:
multiplying this with√x leads to x + 10 = 10√x. By squaring both sides you find
x² - 80x + 100 = 0 with the solutions 40 + - 10√15